Circuit Diagram (Mid) - Roland PX-7B Service Notes

Oct. 2013

Circuit Diagram (Mid)

fig.d-mid.eps@L
TP203
TP201
1
TP202
2
TP204
3
TP205
4
TP206
5
TP208
TP209
TP207
D+5V
R240 22k
R239 47k
R238 22k
R237 22k
R236 47k
R235 22k
R234 22k
R233 47k
R232 22k
R231 22k
R230 47k
R229 22k
R228 22k
R227 47k
R226 22k
R225 22k
R224 47k
R223 22k
R222 22k
R221 47k
R220 22k
R219 22k
R218 47k
R217 22k
SMT NORMAL-TOP_type
CN201
20FMN-BMTTN-A-TFT (LF)(SN)
20
19
18
TP227
17
TP226
16
TP225
15
TP224
14
TP223
13
TP222
12
TP221
11
TP220
10
TP219
9
TP218
8
TP217
7
TP216
6
TP215
5
TP214
4
TP213
3
TP212
2
TP211
1
TP210
To PWB Low
16
D+5V
C216
4.7uF
DGND
C217
0.1uF
L205
1
(IN )
2
L204
3
(IN )
L203
4
( OUT)
5
L202
6
(IN )
L201
7
( OUT)
100
100
100
100
100
DGND DGND
CN203/CN204
UART I2C CSIO
1pin PORT_I
2pin VCC
3pin RXD SCL SDI
4pin TXD SDA SDO
5pin GND
6pin RESET
7pin PORT_O SCK
D(23)
D(22)
D(21)
D(20)
D(19) C223
D(18) C224
D(17) C225
D(16)
D(15)
DGND
D(14)
D(13)
D(12)
D(11)
D(10)
D(9)
D(8)
D(7)
D(6)
D(5)
D(4)
D(3)
D(2)
D(1)
D(0)
FS206
FS205
D(11) (S3)
D(10) (M3)
D(9) (P3)
(S2)
(M2)
(P2)
(S1)
(M1)
(P1)
(S0)
(M0)
(P0)
T(5)
T(4)
T(3)
T(2)
T(1)
T(0)
#
A2 A2 B2
D+5V
PORT_I
EXTIF0-CLK
EXTIF1-CLK
XRST-RST
EXTIF2-CLK
IC201 Serial Selector
UART
R201 NIU
58pin PORT_O SCL
R202 0ohm
59pin TXD SDA
R203 0ohm
60pin RXD PORT_O
R204 NIU
100pF C226
100pF C227
100pF C228
DGND
# #
C3 C3 D3 D3 E3 F3
PX-7B, PX-7C
R204 0
EXTIF2-CLK (PORT_O)
UnPop
R203 0
EXTIF0-CLK (RXD/SDI)
EXTIF1-CLK (TXD/SDO/SDA)
UnPop
R202 0
EXTIF2-CLK (SCK/PORT_O)
R201 0
EXTIF0-CLK (SCL)
C201
C202
C203
C204
C205
DGND
I2C CSIO
0ohm NIU
SCK
NIU 0ohm
SDO UnPop
C213 15pF
NIU 0ohm
SDI
0ohm NIU
2
4
UnPop
C214 15pF
DGND
100pF C229 100pF
100pF C230 100pF
100pF C231 100pF
DGND
# #
F3 G3 G3 A3 A3
D+5V
D+5V
61
0.1uF
VCC
0.1uF 33
VCC
18
0.1uF
VCC
1
0.1uF
VCC
41
0.1uF
AVCC
X1-CLK
DGND
UnPop
X201
DSX321G 16.000MHZ 30PPM
R211 0 UnPop
X00-CLK X01-CLK
D(0:23)
C
C
C
DGND
T
# #
B3 C4 C4 D4